The feedback is appreciated, and were there sufficient entries each month to go to a more 'specialized' format it would be a lot more reasonable. Unfortunately, many months there are no marine tanks entered, or only one. Also, there are many times only a few tanks entered overall (for example, this month looks like only 3 tanks have been entered thus far), if we specialized it, then we would have multiple categories with no entries and some with only one.
The number of entries really limits the format to the way we have it now. It may be 'unfair' as some would see it to put a marine up against a freshwater tank, but who's to say which side has the advantage? Its a matter of personal taste, and that's ultimately what these comps are about - personal taste. If I vote for one tank against another, I and I alone, am the only one who knows what criteria I used in determining which I prefer. Was it fresh vs. salt, was it large versus small, was it based on personal experience with similar sized tanks... lots of reasons to vote for one tank over another.
I am glad that the tank, fish and pet competitions are popular. Imho, what the competitions are really about, is not 'bragging rights' in terms of who wins and who loses, but a chance for members to share their tanks, and for other members to gain some inspiration.